We included in this study 42 individuals with patellofemoral pain syndrome. 39 of them were completed six weeks of exercise and other groups. We randomized them into three groups. One group is the star technique which is a new patellar taping technique. Another group is placebo taping and the third group is only the exercise group. Both groups performed exercises three times a week for six weeks. Three groups were assessed with knee and hip muscles strength, shortness, performance tests, pain severity in the activity, night, rest, and knee-buckling, and Kujala Scale before and after 4-week exercises.

Based on previous studies those participants who met the following inclusion criteria were invited to participate in the study: i) insidious onset of anterior knee pain with a duration greater than 4 weeks; ii) pain provoked by at least two of the following situations: prolonged sitting or kneeling, squatting, running, hopping or ascending or descending stairs; iii) age ranged between 18-60 years.

Participants were excluded in cases of the clinical history of patellofemoral dislocation or subluxation; knee osteoarthritis; injury or pain from the hip, lumbar spine, or other knee structures (meniscus, ligaments, bursa, synovial plica, infrapatellar fat); traumatic lesions of soft tissues or previous orthopedic surgery in lower limbs; having received knee injections of corticosteroids or hyaluronic acid; cognition or impaired communication; being involved in an ongoing medical-legal dispute; using Canadien or walker; can not walk independently and having an allergy to taping.

Inclusion Criteria:

• insidious onset of anterior knee pain with a duration greater than 4 weeks;
• self-reported patellofemoral pain intensity ≥30 mm on the 100 mm Visual Analogue Scale (VAS)
• pain provoked by at least two of the following situations: prolonged sitting or kneeling, squatting, running, hopping, or ascending or descending stairs;
• age ranged between 18-60 years.

Exclusion Criteria:

• the clinical history of patellofemoral dislocation or subluxation; knee osteoarthritis; injury or pain from the hip, lumbar spine, or other knee structures (meniscus, ligaments, bursa, synovial plica, infrapatellar fat)

  -); traumatic lesions of soft tissues or previous orthopedic surgery in lower limbs; having received knee injections of corticosteroids or hyaluronic acid

• cognition or impaired communication

• being involved in an ongoing medical-legal dispute

• using Canadien or walker; can not walk independently

• having an allergy to taping